For hi shock/vibration environs, you must use mechanical attachment hardware.
For static ckts, depending on material, I have used cyanoac-based adhesives w/good short-term (>72hrs) results. The general process is to bend the TC wire into place, secure w/a bead of adhesive about 3mm away from the bi-metal contact point, retain placeement of the TC wire w/xfmr tape, push the TC junction onto the object to be measured, then cover the junction w/small amount of thermally conductive compound (the white heatsink spooge). For long-term apps that have many thermal cycles, a higher grade of adhesive must be used, surfaces must be prepared, and strain relief loops must be incorporated into the TC wire prior to the junction. For really diffucult jobs, I would save much time by using strain-gage adhesive w/film TCs. -----Original Message----- From: Joe Finlayson [mailto:jfinlay...@telica.com] I am in the process of performing a thermal evaluation and am using thermocouples to measure surface temperatures of IC's, etc. I'm finding that the thermocouple tape that I'm using tends to experience a degradation of the adhesive as the temperatures increase (in the 80-100°C range) causing the thermocouples to separate from the surfaces. I'd appreciate any advice that could point to a higher performing tape/adhesive for such an application. Some of the IC's are quite small which doesn't leave much surface area for adhesion and I am using as many as 40 thermocouples per card. ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson: pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
